What is Darren Gregory's NPI number?

Darren Gregory's National Provider Identifier (NPI) is 1144240094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Darren Gregory's specialty?

Darren Gregory is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).

Where is Darren Gregory located?

Darren Gregory's practice location on file with NPPES is 1675 Ursula St, Aurora, CO 80045-7402.

What is Darren Gregory's phone number?

The practice phone number listed in the NPPES registry for Darren Gregory is (720) 848-2500.

Does Darren Gregory accept Medicare?

Darren Gregory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Darren Gregory's NPI active?

Yes — Darren Gregory's NPI (1144240094) is active in the NPPES registry as of the last update on 2012-12-04.

IndividualActiveAccepts Medicare

Darren Gregory, MD

NPI 1144240094 · Ophthalmology Physician · Aurora, CO

Darren Gregory, MD is a Ophthalmology Physician provider in Aurora, CO (NPI 1144240094).

Provider details

NPI number: 1144240094
Entity type: Individual
Primary specialty: Ophthalmology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: 35514 (CO)

Practice location

1675 Ursula St

Mail Stop F.731, Box 6510

Aurora, CO 80045-7402

Phone: (720) 848-2500

Fax: (720) 848-5014

Street-level locationGet directions

More CO providers

Mailing address

Po Box 110429

Aurora, CO 80042-0429

Specialties & taxonomies

Ophthalmology PhysicianPrimary207W00000XLicense 35514 (CO)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(72/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
680 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Complete Exam of Visual System92014	269	$75
Established Patient Problem Focused Exam of Visual System92012	221	$50
Closure of Tear Duct Opening Using Plug68761	94	$136
New Patient Complete Exam of Visual System92004	24	$93
Measurement of Corneal Curvature and Depth of Eye92136	24	$30
Exam of Visual Field With Extended Testing92083	18	$27
Imaging of Optic Nerve

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Fluorometholone	275	99
Cyclosporinebrand: Restasis	68	28
Prednisolone Acetate	62	42
Moxifloxacin Hclbrand: Moxifloxacin	52	37
Lifitegrastbrand: Xiidra	43	15
Ketorolac Tromethamine	42	28
Erythromycin Basebrand: Erythromycin	41	13

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$545 across 5 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-07-20
Last updated: 2012-12-04

Frequently asked questions

What is Darren Gregory's NPI number?: Darren Gregory's National Provider Identifier (NPI) is 1144240094, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Darren Gregory's specialty?: Darren Gregory is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
Where is Darren Gregory located?: Darren Gregory's practice location on file with NPPES is 1675 Ursula St, Aurora, CO 80045-7402.
What is Darren Gregory's phone number?: The practice phone number listed in the NPPES registry for Darren Gregory is (720) 848-2500.
Does Darren Gregory accept Medicare?: Darren Gregory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Darren Gregory's NPI active?: Yes — Darren Gregory's NPI (1144240094) is active in the NPPES registry as of the last update on 2012-12-04.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Established Patient Complete Exam of Visual System92014	269	$75
Established Patient Problem Focused Exam of Visual System92012	221	$50
Closure of Tear Duct Opening Using Plug68761	94	$136
New Patient Complete Exam of Visual System92004	24	$93
Measurement of Corneal Curvature and Depth of Eye92136	24	$30
Exam of Visual Field With Extended Testing92083	18	$27
Imaging of Optic Nerve

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Fluorometholone	275	99
Cyclosporinebrand: Restasis	68	28
Prednisolone Acetate	62	42
Moxifloxacin Hclbrand: Moxifloxacin	52	37
Lifitegrastbrand: Xiidra	43	15
Ketorolac Tromethamine	42	28
Erythromycin Basebrand: Erythromycin	41	13

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$545 across 5 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments